Thoracic iliocostal muscle
Musculus iliocostalis thoracis
Draws the ribs back in breathing and bends the trunk to its own side.
About the thoracic iliocostal muscle of the horse
Thoracic iliocostal muscle is a muscle of the chest (thorax), on the left side. Its name in the Nomina Anatomica Veterinaria is Musculus iliocostalis thoracis. You can turn it above, see it in place in the chest of the horse, and open it inside the whole animal in Vetomica.
Where it runs from and to
A muscle is told apart from its neighbours by what it takes hold of at each end, which is also what decides what it does when it shortens.
- Origin
- The deep lumbar fascia and the cranial borders of the caudal ribs.
- Insertion
- The hind edges of ribs further forward, and the last cervical vertebra at its transverse process.
- Action
- Draws the ribs back in breathing and bends the trunk to its own side.
- Nerve
- Thoracic spinal nerves, their dorsal rami.
Written for Vetomica in its own words from the standard reference anatomy of the horse; the books it was checked against are listed below.
Terminology
- English
- Thoracic iliocostal muscle
- Latin (NAV)
- Musculus iliocostalis thoracis
- Status
- A valid term in the Nomina Anatomica Veterinaria
Questions about the thoracic iliocostal muscle
- What is the Latin name of the thoracic iliocostal muscle?
- In the Nomina Anatomica Veterinaria, the thoracic iliocostal muscle is called Musculus iliocostalis thoracis.
- Where is the thoracic iliocostal muscle of the horse?
- Thoracic iliocostal muscle is a muscle of the chest (thorax), on the left side.
- Where does the thoracic iliocostal muscle originate and insert?
- Origin: The deep lumbar fascia and the cranial borders of the caudal ribs. Insertion: The hind edges of ribs further forward, and the last cervical vertebra at its transverse process.
- What nerve supplies the thoracic iliocostal muscle?
- Thoracic spinal nerves, their dorsal rami.
- What does the thoracic iliocostal muscle do?
- Draws the ribs back in breathing and bends the trunk to its own side.
See the thoracic iliocostal muscle inside the whole horse.
Vetomica opens on this structure with every layer of the horse around it: peel back the skin and the muscles, cut a section through it, X-ray it, and practise naming it until you stop getting it wrong.
Free for 7 days, no card. After that the skeletons stay free.
